{"id":3897244,"url":"https://alion.io/job/system1-senior-fullstack-software-engineer-startpage","title":"Senior Fullstack Software Engineer, Startpage","company":{"id":4849,"name":"System1","domain":"system1.com","url":"https://alion.io/company/system1","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":95,"open_postings":3,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":158,"computed_at":"2026-11-14T05:58:10Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Los Angeles, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Helm","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Multi-Agent Systems","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Redis","optional":false},{"name":"Snowflake","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"GitHub","optional":true},{"name":"Jira","optional":true},{"name":"Slack","optional":true}],"status":"live","first_seen_at":"2026-11-06T19:45:17Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-14T14:05:11Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"Startpage is a private search engine with roots going back to Ixquick in 1998, owned by System1 (NYSE: SST) and competing with DuckDuckGo, Brave and Ecosia. We are expanding from search results into a broader set of consumer products for people who want privacy without giving up a modern experience.\nYou will be a senior full stack engineer on the Startpage Consumer team, a small North America-based group where every engineer works with AI coding agents as a core part of the job. You know how to run agents in loops, coordinate multiple agents on one problem, and judge their output critically. The stack is mostly Python and JavaScript. You will own features from first commit to production across the web frontend, backend services and data pipeline, shape the architecture as the product grows, and pay down the tech debt that slows us. The team ships weekly, so your work reaches millions of monthly users within days.\nThis position is an onsite role requiring you to work in our headquarters located at 4235 Redwood Ave. Los Angeles, CA 90066.\nWhat you'll work on:\nExpect to work across the full breadth of the product rather than one slice of it.\nNew consumer products that extend Startpage beyond the search box, on desktop and on the web\n\nThe search results page itself: new features for subscribers and for everyone, within the constraints of our search partnerships\n\nReal-time decisioning that shapes what a user sees for a given query\n\nThe homepage and engagement features that bring people back\n\nTraffic quality and abuse prevention for a product that attracts automated traffic\n\nData instrumentation and reporting so the team can see what is working\n\nResponsibilities:\nDesign, build and ship features end to end, from API and data model through to the UI\n\nDrive your work with AI coding agents: give them the tools, context and guardrails they need, run them in loops against a spec, orchestrate several agents in parallel on one problem, and review what they produce with a critical eye\n\nTurn interactive prototypes from product into production code, keeping the intent and cutting what does not hold up\n\nOwn services in production on Kubernetes: deploys, monitoring, the on-call rotation, and the latency and uptime targets a search product demands\n\nShape architecture decisions and lead tech-debt reduction so the codebase stays fast to change\n\nProtect user privacy in every design decision: no tracking, minimal data retention, and no third-party calls that leak queries\n\nWrite automated tests as a matter of course\n\nInstrument features and read your own results in Sigma and Snowflake; propose the next iteration from the data\n\nWork with outside partners and agencies so web and app experiences stay consistent\n\nWrite clear tickets, PRs and design notes; review teammates' work the same day\n\nRequirements:\nDaily, hands-on use of agentic coding tools: you can run agents in loops, write the evals that keep them honest, coordinate multi-agent workflows, and know when to take the keyboard back\n\n5+ years of professional web development, owning both frontend and backend in production\n\nStrong Python, plus JavaScript or TypeScript, React, and modern CSS and HTML\n\nHands-on with Docker, Kubernetes, Helm and Redis\n\nCI/CD and monitoring tooling, and AWS or a comparable cloud platform; comfortable being paged for what you ship\n\nSolid automated testing habits\n\nSQL fluency and the habit of checking your own feature's numbers after launch\n\nCare for performance: you know what a 100 ms regression costs on a search results page\n\nClear written communication with a distributed team and outside vendors\n\nNice to have:\nDesktop browser or mobile app experience, especially Chromium, Electron or a shipped native app\n\nPrior search or privacy product experience\n\nAds or recommendations systems, especially serving ML models at low latency\n\nBot detection, fraud or abuse prevention\n\nSEO-driven site generation at scale\n\nFamiliarity with EU privacy regulation\n\nHow we work:\nSmall North America-based team, weekly releases\n\nProduct work starts as a clickable prototype; engineers are expected to push back on it before building\n\nAgents do the typing; engineers own the architecture, the review and the outcome\n\nData over opinion: every feature ships with instrumentation and a success metric\n\nJira for tracking, GitHub for code, Sigma and Snowflake for analytics, Slack for the day to day\n\nWhat we have to offer:\nCompetitive salary + bonus + equity\nGenerous PTO + 11 company holidays\nOpen sick time\n100% covered Medical, Dental, Vision for employees\n401k with match\nHealth & Dependent Care Flex Spending Account \nPaid professional development\nLeadership & growth opportunities\nVirtual company and team building events","description_format":"text","description_chars":4725,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["401k plan","Equity","Growth opportunities","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Advertising","Search Engines","Coupons, Deals & Cashbacks"],"lifecycle":[{"event":"open","at":"2026-11-06T23:28:32Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"green card filings: 1","filings_12m":0,"filings_prev_12m":1,"green_card_filings_12m":1,"median_offered_wage_usd":277500,"route":null,"cap_exempt":false,"checked_at":"2026-11-14T07:33:33+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":7,"expected_fill_days":158,"reasons":["conf:0","win:early"],"computed_at":"2026-11-14T05:58:10Z"},"pay":null,"html_url":"https://alion.io/job/system1-senior-fullstack-software-engineer-startpage","json_url":"https://alion.io/job/system1-senior-fullstack-software-engineer-startpage.json","meta":{"generated_at":"2026-11-14T17:26:44Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":20205,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-15T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4849},"rest":"https://alion.io/mcp/rest/get_company?id=4849"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsystem1-senior-fullstack-software-engineer-startpage"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fsystem1-senior-fullstack-software-engineer-startpage"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fsystem1-senior-fullstack-software-engineer-startpage"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/system1-senior-fullstack-software-engineer-startpage\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsystem1-senior-fullstack-software-engineer-startpage"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3897244}},{"tool":"search_jobs","arguments":{"company":"system1.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3897244},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); 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